BD46441G-TR

Overview

The BD46441G-TR is a voltage detector manufactured by ROHM Semiconductor, designed for supervisory circuit applications. It features a fixed threshold voltage of 4.4 V and a reset delay time of 100 ms. The device operates within a power supply voltage range up to 10 V and offers an accuracy of 1%. It utilizes a CMOS output type and supports manual reset functionality without a watchdog timer or battery backup switch. The component is housed in an SSOP-5 package with a maximum power dissipation of 540 mW. It functions reliably across a temperature range from -40°C to +105°C, consuming a static current of 850 nA.

Feature Summary

• Provides precise voltage monitoring with a fixed detection threshold and high accuracy.
• Integrates a manual reset function for controlled system recovery.
• Features low static current consumption for energy-efficient operation.
• Delivers stable performance across extended industrial temperature ranges.

Applications

• General-purpose electronic equipment requiring voltage supervision
• Microprocessor reset circuits in embedded systems
• Battery-powered devices needing reliable power management
• Industrial control systems operating in harsh environments

Procurement Notes

Verify the obsolete status and last-time-buy availability before procurement. Confirm regional distribution restrictions as sales may be limited in certain areas. Ensure compatibility with existing SSOP-5 footprints and electrical requirements. Check for RoHS compliance documentation if required for specific regulatory standards. Evaluate alternative components due to potential supply chain constraints.

Selection Notes

Select this component when a fixed 4.4 V threshold and 100 ms delay are required. Consider the CMOS output and manual reset capabilities for system design. Verify that the 10 V maximum voltage and 850 nA static current meet application needs. Ensure the SSOP-5 package fits the PCB layout. Compare against similar parts like BD5244G-1 for feature differences such as adjustable delays.

Part Context

The BD46441G-TR belongs to the BD46 series of voltage detectors from ROHM Semiconductor. It is part of a family of supervisory circuits designed for monitoring power supply voltages. The TR suffix indicates a tape-and-reel packaging format suitable for automated assembly. This component is categorized under PMIC - Power Management Integrated Circuits, specifically within the Voltage Supervisors subcategory.

Replacement Considerations

The BD5244G-1 is listed as a recommended replacement with the same SSOP-5 package. Note that the BD5244G-1 features an open-drain output and adjustable delay, differing from the BD46441G-TR's CMOS output and fixed delay. Verify these functional differences against the original design requirements before substitution.

FAQ

Does the BD46441G-TR include a watchdog timer?

No, the BD46441G-TR does not include a watchdog timer functionality.

What is the reset active state of the BD46441G-TR?

The reset active state is Low.